Thanks Nathan. This could potentially be a bug. But it depends on how the original from that clone was created. I mean, if the drawing you are lassoing from already was made up of a lot of stamped drawings, then that could explain it. On the other hand, if the original of the clone you lassoed from was just a simple drawing drawn on a new blank, then you found an important bug. Maybe you could try to recreate the situation, to make sure which one it is?
Remember, this warning is only coming up if a lassoed area is taking 2 seconds or more to pick up. Normally it would happen instantly, so 2 seconds is a lot – also for old slow computers I would say.
Sorry that this is becoming a technical talk. But now it is about the internal workings of Animation Paper (which is interesting as well – at least for me!). Of course people don’t need to think or worry about these things when using Animation Paper normally. 🙂